Rational design of highly efficient flexible and transparent p-type composite electrode based on single-walled carbon nanotubes

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-9
Series
Nano Energy, Volume 67
Abstract
Transparent electrodes are of great importance in electronics and energy technologies. At present, transparent conductive oxides are mainly n-type conductors dominating the market and have restricted the technological advancements. Single-walled carbon nanotubes (SWCNTs) have recently emerged as promising p-type transparent conductor owing to their superior hole mobility, conductivity, transparency, flexibility and possibility to tune the work function. Here, we develop a novel rational design of p-type flexible transparent conductive film (TCF) based on SWCNTs combined with poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), molybdenum oxide and SWCNT fibers. In a configuration of SWCNTs-MoO3-PEDOT:PSS/SWCNT fibers, we achieved a record equivalent sheet resistance of 17 Ω/sq with a transmittance of 90% at 550 nm and a high degree of flexibility. We demonstrate that our solar cells developed on the basis of the proposed electrode and hydrogenated amorphous silicon (a-Si:H) yield an outstanding short-circuit current density of Jsc = 15.03 mA/cm2 and a record power conversion efficiency of PCE = 8.8% for SWCNTs/a-Si:H hybrid solar cells. We anticipate that this novel rationally designed p-type TCF opens a new avenue in widespread energy technologies, where high hole conductivity and transparency of the material are prerequisites for their successful implementation.
Description
Keywords
Composite, Flexible, Hybrid thin film solar cells, Single-walled carbon nanotubes, Transparent p-type electrode
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Citation
Rajanna , P M , Meddeb , H , Sergeev , O , Tsapenko , A P , Bereznev , S , Vehse , M , Volobujeva , O , Danilson , M , Lund , P D & Nasibulin , A G 2020 , ' Rational design of highly efficient flexible and transparent p-type composite electrode based on single-walled carbon nanotubes ' , Nano Energy , vol. 67 , 104183 , pp. 1-9 . https://doi.org/10.1016/j.nanoen.2019.104183